Tetracyclines on the NCLEX
Doxycycline, tetracycline: pediatric/pregnancy contraindication, sun sensitivity, dairy interaction.
Tetracyclines include doxycycline (most-used) and tetracycline. NCLEX tests bone/teeth effect in kids and pregnancy, sun sensitivity, and dairy.
Common drugs
Doxycycline (most used), minocycline, tetracycline.
Contraindications
Pregnancy (bone/teeth). Children <8 (permanent teeth discoloration, enamel hypoplasia).
Photosensitivity
Use sunscreen. Avoid prolonged sun. Especially doxycycline.
Dairy / antacids
Chelate tetracyclines. Separate by 2 hours.
Uses
Acne. Rocky Mountain spotted fever (doxy). Chlamydia. Lyme disease. Atypical pneumonia. Anthrax prophylaxis.
Frequently asked
Doxycycline in pregnancy ever?
Generally avoided. Risk-benefit for serious infections like RMSF where alternatives lacking.
Take with food?
Doxycycline tolerates food. Tetracycline doesn't (food impairs absorption).
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